<?phpclass JSONDecoderPipe extends BasePipe{	private $field;	private $result_field;		public function __construct($config)	{		parent::__construct($config);		$this->field = $config["field"];		$this->result_field = $config["result_field"];	}		public function transform_record($record)	{		$field = $this->field;		$result_field = $this->result_field;				$record->$result_field = json_decode($record->$field);				return $record;	}}